I have 3 open bank credit cards, one of them I opened for my former home business. I had a couple of other accounts, but they were closed by the issuer last year, because I didn't use them. The only problem I have with that is one of the cards was my oldest account, and had a relatively large available balance of $12,800. I know my credit score took a hit for a few months after those cards were closed, because my average card age and overall credit availability were lessened. Although I was not in the market for any new credit, I think that there should be a special notation on credit reports when cards are closed due to inactivity, and the credit score calculation formula adjusted not to reflect a higher debt to available credit ratio.